通常，那些数据应该存放在一张子表中，子表的外部关键字关联到表contacts。
In general, that data would live in a child table with a foreign key relation to the table contacts.
要深入了解MySQL参照完整性，请参考MySQL产品文档中关于外部关键字的部分。
For more on MySQL referential integrity, please see the section on foreign keys constraints in the MySQL product documentation.
因此您需要将Employee的外部关键字属性，与Department的主关键字映射上。
Therefore, you need to map the foreign key attribute in Employee to the Department's primary key.
默认情况下，通过添加静态全局变量外部链接，除非改变了关键字。这将有助于澄清的事情。
By default the global variables have external linkage unless changed by adding static keyword. This will help clarify things.
要看看你外部搜索的关键字相当简单，只需在标准谷歌分析仪面板的“关键词”栏中找。
To look at your external search keywords is rather straightforward and is shown in a "keywords" box on the standard Analytics dashboard.
默认情况下，通过添加静态全局变量外部链接，除非改变了关键字。
By default the global variables have external linkage unless changed by adding static keyword.
这也是一个伟大的工具，以分析你的robots. txt文件，查看你的搜索排名，关键字，并看到了一些内部和外部的联系，以你的站点。
It's also a great tool to analyze your robots. TXT file, to view your search rankings for keywords, and to see the number of internal and external links to your site.
这也是一个伟大的工具，以分析你的robots. txt文件，查看你的搜索排名，关键字，并看到了一些内部和外部的联系，以你的站点。
It's also a great tool to analyze your robots. TXT file, to view your search rankings for keywords, and to see the number of internal and external links to your site.
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